Drive Function Check; Pre-Setting For Test Mode Operation - Sony CDL1100 Service Manual

6-3-4. DRIVE FUNCTION CHECK

Since CDM-47 models is adjustment-free drive, there is no potenti-
ometer fo electrical adjustment in the MA-C30 Mounted Board. There-
fore BU or MA Mounted Board can be swapped over without any
manual adjustment so that you will easily find defective components
(if the trouble depends on BU or MA Mounted Board). (Refer to 6-3-
4-2.)
Note: All of adjustment items, will be automatically performed after
power-on by the function of CD DSP IC.
The page 6-15 shows the sequence of execution items in Power-
On Reset Actions. It will help you finding any defective point
on the drive to know the specified processing sequence of the
auto adjustment items and drive's action in the Power-On Re-
set Actions.
Preparing
a. The following tools and measuring equipments are necessary for
performing this section.
DC Power Supply or CDL1100 unit
Oscilloscope
Sony Test Disc (YEDS-18)
CDL1100 (CDM-47) CONTROLLER
b. Connect the test drive to the DC power supply or CDL1100 unit.

6-3-4-1. Pre-Setting for Test Mode Operation

Note: This section is performed only specified following sections.
Note: This section describes usages of Test Mode Operation and sig-
a. Connect CDM-47 to CDL1100 (CDM-47) CONTROLLER as
shown in following Fig. 3-4-1.
CNJ202 enlargement
7
8
(3-702-101-01)
(J-2501-141-A)
CNJ202
(MA-C30 board)
b. See the COMMAND SW ON CDL1100 (CDM-47) CONTROL-
LER as following table.
c. While pressing the TEST button of the controller, turn on the
power of the CDL1100 or power supply unit.
d. After about 1 second later, release the TEST button.
Note: Even drive is Test Mode, EJECT button is activated.
nal checking on the CDM-47 drives with the CDL1100 (CDM-
47) CONTROLLER.
1
14
Connect this part to the
controller
Controller
CN56 (CN board)
ID2 ID1 ID0 PARITY
L H L L
CDM-47
15